Tam Huynh

Senior Software Engineer · Ho Chi Minh City, Vietnam.

Eight years of shipping mobile — from a one-person MVP to apps used by tens of millions.

About

I'm a Senior Software Engineer with eight years building mobile — from a solo MVP to platforms reaching tens of millions of users.

I started at East Agile writing Python/Django, then joined 25 Inc. as their first employee — owned every part of the Android stack from architecture to production. Seven years of building gave me an obsession with code that runs fast, stays maintainable, and ships on time.

Today I'm at VNG working on Zalo, where I'm the only engineer leading Android technical decisions in a 3-person team within Zalo Platforms. The work I love most is the kind that needs both engineering rigor and a clear sense of why we're building it — performance work, refactors that make the next feature easier, code that holds up at scale.

Experience

VNG Corporation — Senior Software Engineer · Mobile (Current)

Working on Zalo — Vietnam's most-used messaging app. The only engineer leading Android technical decisions in a 3-person team within Zalo Platforms (ZPF).

  • Own end-to-end Android technical decisions — architecture, code quality, engineering direction
  • Drive large-scale refactors and migrations to modern Kotlin Coroutines + modular MVVM, balancing legacy stability with maintainability
  • Tackle performance, latency, and scalability challenges on a high-traffic Vietnamese app
  • Mentor junior engineers, coordinate cross-team work, and bring AI-assisted workflows into the team's day-to-day

Touched → Zalo (zalo.me) · Kotlin · Coroutines · Architecture · Performance

25 Inc. — Mobile Lead → Product Manager (7 yrs)

Joined as the first employee. Built the product solo, scaled the team to six, then took on product management alongside the CEO.

  • Built gannha.com from zero, then expanded team to iOS, Backend & Data
  • Led mobile team — architecture, code quality, mentorship
  • As PM: roadmaps, sprints, partner relationships, product strategy
  • Worked as a builder, not just a coder

Touched → gannha.com · dkid.vn · Mobile Lead · Product

Himintech — Senior Android Engineer (Freelance)

Worked remotely with minimal oversight, owning a full release phase end-to-end.

  • Delivered Phase 4 features end-to-end, solo
  • Trusted with the project's most critical work

Touched → ShareX

East Agile — Fullstack Developer · Python/Django (Day one)

First job out of university. Got a full-stack foundation across backend, frontend, databases, and cloud — end-to-end ownership from week one.

  • Two collaborative Django projects
  • One independent data project, fully owned

Stack → Python · Django · Fullstack

Robotics & IoT HCMUS Club · AI Lab — Teaching Assistant · University of Science, VNU-HCM (Pre-grad)

Taught high schoolers Android development with MIT App Inventor. Helped them grasp programming concepts, business logic, and event-based interaction.

  • Prepared teaching materials — videos, slides, exercises
  • Assisted students hands-on during class sessions
  • Hosted the final exhibition where students showcased their apps

Teaching → MIT App Inventor · Android · Mentoring

Skills

Education

VNUHCM · University of Science — Computer Science · Honors Program

· Graduated with Distinction · Thesis 9.5/10.

Thesis: Indoor localization — algorithm research and an Android app that pinpoints user location inside Nowzone food court (4F) and shopping area (1F), with indoor maps, shop details, and floor-to-floor navigation.

Microsoft Student Partners · Vietnam — Technical Evangelist · Dedicated Member

  • Main trainer for WeSpeakCode, HourOfCode, and the MSP tour
  • Hosted 2 Microsoft training events at university — 70+ participants
  • Hands-on with Windows Phone, Windows 10, and Azure

Tags: Windows Phone · Azure · Public speaking.

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